semantic-scm error message when editing scheme code

[Forrest]

i got an error message when editing mit-scheme source code:

idle error: "#<buffer test.scm> - Wrong number of arguments: #[(tag) \"^H\\211^XA@)^Y\\303^H!^Z \\304=\\203!^@^H\\211^X@)\\305\\306\\307\\310#\\311R\\202$^@\\312^H!*\\207\" [tag tok args semantic-tag-components function \" (\" mapconcat #[(a) \"^H\\207\" [a] 1] \" \" \")\" semantic-format-tag-prototype-default] 7 (\"/usr/local/src/cedet-
1.0pre4/semantic/bovine/semantic-scm.elc\" . 1053)], 3"

Debian 4.0
GNU Emacs 23.0.60.1 (i686-pc-linux-gnu, GTK+ Version 2.8.20) 
cedet-1.0pre4

i searched in Google but got no useful answer, is it a bug of semantic? how could i fix it?

thanks!

Forrest

-- 
Stupid is as stupid does.